1 files changed, 106 insertions, 0 deletions
diff --git a/power_sequencer/operators/make_hold_frame.py b/power_sequencer/operators/make_hold_frame.py
new file mode 100644
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--- /dev/null
+++ b/power_sequencer/operators/make_hold_frame.py
@@ -0,0 +1,106 @@
+#
+# Copyright (C) 2016-2020 by Nathan Lovato, Daniel Oakey, Razvan Radulescu, and contributors
+#
+# This file is part of Power Sequencer.
+#
+# Power Sequencer is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# Power Sequencer is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with Power Sequencer. If
+# not, see <https://www.gnu.org/licenses/>.
+#
+import bpy
+import operator
+
+from .utils.global_settings import SequenceTypes
+from .utils.functions import convert_duration_to_frames
+from .utils.doc import doc_name, doc_idname, doc_brief, doc_description
+
+
+class POWER_SEQUENCER_OT_make_hold_frame(bpy.types.Operator):
+    """
+    *brief* Make a hold frame from the active strip.
+
+    Converts the image under the cursor to a hold frame, to create a pause effect in the video,
+    using the active sequence.
+    """
+
+    doc = {
+        "name": doc_name(__qualname__),
+        "demo": "",
+        "description": doc_description(__doc__),
+        "shortcuts": [],
+        "keymap": "Sequencer",
+    }
+    bl_idname = doc_idname(__qualname__)
+    bl_label = doc["name"]
+    bl_description = doc_brief(doc["description"])
+    bl_options = {"REGISTER", "UNDO"}
+
+    strip_duration: bpy.props.FloatProperty(
+        name="Strip Duration",
+        description="The duration in seconds of the new strip, if 0.0 it will use the gap as its duration",
+        default=0.0,
+        min=0.0,
+    )
+
+    @classmethod
+    def poll(cls, context):
+        return context.scene.sequence_editor.active_strip.type in SequenceTypes.VIDEO
+
+    def invoke(self, context, event):
+        window_manager = context.window_manager
+        return window_manager.invoke_props_dialog(self)
+
+    def execute(self, context):
+        scene = context.scene
+        active = scene.sequence_editor.active_strip
+        sequencer = bpy.ops.sequencer
+        transform = bpy.ops.transform
+
+        frame_start = scene.frame_current
+
+        if not active.frame_final_start <= frame_start < active.frame_final_end:
+            return {"FINISHED"}
+
+        if frame_start == active.frame_final_start:
+            scene.frame_current = frame_start + 1
+
+        # Detect the gap automatically
+        offset = convert_duration_to_frames(context, self.strip_duration)
+        if self.strip_duration <= 0.0:
+            try:
+                next_strip_start = next(
+                    s
+                    for s in sorted(context.sequences, key=operator.attrgetter("frame_final_start"))
+                    if s.frame_final_start > active.frame_final_end
+                ).frame_final_start
+                offset = next_strip_start - active.frame_final_end
+            except Exception:
+                pass
+
+        active.select = True
+        source_blend_type = active.blend_type
+        sequencer.split(frame=scene.frame_current, type="SOFT", side="RIGHT")
+        transform.seq_slide(value=(offset, 0))
+        sequencer.split(frame=scene.frame_current + offset + 1, type="SOFT", side="LEFT")
+        transform.seq_slide(value=(-offset, 0))
+
+        sequencer.meta_make()
+        active = scene.sequence_editor.active_strip
+        active.name = "Hold frame"
+        active.blend_type = source_blend_type
+        active.select_right_handle = True
+        transform.seq_slide(value=(offset, 0))
+
+        scene.frame_current = frame_start
+
+        active.select = True
+        active.select_right_handle = False
+        active.select_left_handle = False
+        return {"FINISHED"}